mirror of
https://github.com/yarrick/iodine.git
synced 2024-11-25 11:05:15 +00:00
Added fine tuning command-line options
This commit is contained in:
frekky
parent
c7cff96055
commit
6eb2e4d251
116
src/iodine.c
116
src/iodine.c
@ -23,7 +23,6 @@
|
||||
#include <unistd.h>
|
||||
#include <sys/types.h>
|
||||
#include <sys/param.h>
|
||||
#include <sys/time.h>
|
||||
#include <fcntl.h>
|
||||
#include <time.h>
|
||||
|
||||
@ -66,33 +65,48 @@ static void usage() __attribute__((noreturn));
|
||||
#endif
|
||||
|
||||
static void
|
||||
usage() {
|
||||
print_usage()
|
||||
{
|
||||
extern char *__progname;
|
||||
|
||||
fprintf(stderr, "Usage: %s [-v] [-h] [-f] [-D] [-r] [-u user] [-t chrootdir] [-d device] "
|
||||
"[-P password] [-m maxfragsize] [-M maxlen] [-T type] [-O enc] [-L 0|1] [-I sec] "
|
||||
"[-z context] [-F pidfile] topdomain [nameserver ...]\n", __progname);
|
||||
fprintf(stderr, "Usage: %s [-v] [-h] [-f] [-r] [-u user] [-t chrootdir] [-d device] "
|
||||
"[-w downfrags] [-W upfrags] [-i sec] [-I sec] [-C 0|1] [-c 0|1]"
|
||||
"[-P password] [-m maxfragsize] [-M maxlen] [-T type] [-O enc] [-L 0|1] "
|
||||
"[-z context] [-F pidfile] topdomain [nameserver1 [nameserver2 [nameserverN ...]]]\n", __progname);
|
||||
}
|
||||
|
||||
static void
|
||||
usage()
|
||||
{
|
||||
print_usage();
|
||||
exit(2);
|
||||
}
|
||||
|
||||
static void
|
||||
help() {
|
||||
extern char *__progname;
|
||||
|
||||
help()
|
||||
{
|
||||
fprintf(stderr, "iodine IP over DNS tunneling client\n");
|
||||
fprintf(stderr, "Usage: %s [-v] [-h] [-f] [-r] [-u user] [-t chrootdir] [-d device] "
|
||||
"[-P password] [-m maxfragsize] [-M maxlen] [-T type] [-O enc] [-L 0|1] [-I sec] "
|
||||
"[-z context] [-F pidfile] topdomain [nameserver1 [nameserver2 [nameserverN ...]]] \n", __progname);
|
||||
fprintf(stderr, "Options to try if connection doesn't work:\n");
|
||||
print_usage();
|
||||
fprintf(stderr, "\nOptions to try if connection doesn't work:\n");
|
||||
fprintf(stderr, " -T force dns type: NULL, PRIVATE, TXT, SRV, MX, CNAME, A (default: autodetect)\n");
|
||||
fprintf(stderr, " -O force downstream encoding for -T other than NULL: Base32, Base64, Base64u,\n");
|
||||
fprintf(stderr, " Base128, or (only for TXT:) Raw (default: autodetect)\n");
|
||||
fprintf(stderr, " -I max interval between requests (default 4 sec) to prevent DNS timeouts\n");
|
||||
fprintf(stderr, " -I target interval between sending and receiving requests (default: 4 secs)\n");
|
||||
fprintf(stderr, " should be greater than the round-trip for the connection\n");
|
||||
fprintf(stderr, " -L 1: use lazy mode for low-latency (default). 0: don't (implies -I1)\n");
|
||||
fprintf(stderr, " -m max size of downstream fragments (default: autodetect)\n");
|
||||
fprintf(stderr, " -M max size of upstream hostnames (~100-255, default: 255)\n");
|
||||
fprintf(stderr, " -r to skip raw UDP mode attempt\n");
|
||||
fprintf(stderr, " -P password used for authentication (max 32 chars will be used)\n");
|
||||
|
||||
fprintf(stderr, "Fine-tuning options:\n");
|
||||
fprintf(stderr, " -w downstream fragment window size (default: 8)\n");
|
||||
fprintf(stderr, " -W upstream fragment window size (default: 8)\n");
|
||||
fprintf(stderr, " -i server-side request timeout in lazy mode \n");
|
||||
fprintf(stderr, " (default: automatically adjust from max timeout and round-trip time)\n");
|
||||
fprintf(stderr, " -C 1: use downstream compression (default), 0: disable\n");
|
||||
fprintf(stderr, " -c 1: use upstream compression, 0: disable (default)\n\n");
|
||||
|
||||
fprintf(stderr, "Other options:\n");
|
||||
fprintf(stderr, " -v to print version info and exit\n");
|
||||
fprintf(stderr, " -h to print this help and exit\n");
|
||||
@ -102,16 +116,19 @@ help() {
|
||||
fprintf(stderr, " -t dir to chroot to directory dir\n");
|
||||
fprintf(stderr, " -d device to set tunnel device name\n");
|
||||
fprintf(stderr, " -z context, to apply specified SELinux context after initialization\n");
|
||||
fprintf(stderr, " -F pidfile to write pid to a file\n");
|
||||
fprintf(stderr, "nameserver is the IP/hostname of the relaying nameserver(s). if absent, /etc/resolv.conf is used\n");
|
||||
fprintf(stderr, " -F pidfile to write pid to a file\n\n");
|
||||
|
||||
fprintf(stderr, "nameserver is the IP/hostname of the relaying nameserver(s).\n");
|
||||
fprintf(stderr, " multiple nameservers can be specified (used in round-robin). \n");
|
||||
fprintf(stderr, " if absent, system default is used\n");
|
||||
fprintf(stderr, "topdomain is the FQDN that is delegated to the tunnel endpoint.\n");
|
||||
|
||||
exit(0);
|
||||
}
|
||||
|
||||
static void
|
||||
version() {
|
||||
version()
|
||||
{
|
||||
fprintf(stderr, "iodine IP over DNS tunneling client\n");
|
||||
fprintf(stderr, "Git version: %s\n; protocol version %08X", GITREVISION, PROTOCOL_VERSION);
|
||||
exit(0);
|
||||
@ -137,11 +154,20 @@ main(int argc, char **argv)
|
||||
int dns_fd;
|
||||
int max_downstream_frag_size;
|
||||
int autodetect_frag_size;
|
||||
int hostname_maxlen;
|
||||
|
||||
int retval;
|
||||
int raw_mode;
|
||||
int lazymode;
|
||||
int selecttimeout;
|
||||
int hostname_maxlen;
|
||||
double max_interval_sec;
|
||||
double server_timeout_sec ;
|
||||
int autodetect_server_timeout;
|
||||
int up_compression;
|
||||
int down_compression;
|
||||
|
||||
int up_windowsize;
|
||||
int down_windowsize;
|
||||
|
||||
#ifdef OPENBSD
|
||||
int rtable = 0;
|
||||
#endif
|
||||
@ -156,6 +182,7 @@ main(int argc, char **argv)
|
||||
int nameserv_family;
|
||||
|
||||
nameserv_addrs_len = 0;
|
||||
nameservaddr_len = 0;
|
||||
nameserv_host = NULL;
|
||||
topdomain = NULL;
|
||||
errormsg = NULL;
|
||||
@ -177,9 +204,16 @@ main(int argc, char **argv)
|
||||
retval = 0;
|
||||
raw_mode = 1;
|
||||
lazymode = 1;
|
||||
selecttimeout = 4;
|
||||
max_interval_sec = 5; /* DNS RFC says 5 seconds minimum */
|
||||
server_timeout_sec = 4; /* Safe value for RTT <1s */
|
||||
autodetect_server_timeout = 1;
|
||||
hostname_maxlen = 0xFF;
|
||||
nameserv_family = AF_UNSPEC;
|
||||
up_compression = 0;
|
||||
down_compression = 1;
|
||||
|
||||
up_windowsize = 8;
|
||||
down_windowsize = 8;
|
||||
|
||||
#ifdef WINDOWS32
|
||||
WSAStartup(req_version, &wsa_data);
|
||||
@ -196,7 +230,7 @@ main(int argc, char **argv)
|
||||
__progname++;
|
||||
#endif
|
||||
|
||||
while ((choice = getopt(argc, argv, "46vfDhru:t:d:R:P:m:M:F:T:O:L:I:")) != -1) {
|
||||
while ((choice = getopt(argc, argv, "46vfDhrCcu:t:d:R:P:w:W:m:M:F:T:O:L:I:")) != -1) {
|
||||
switch(choice) {
|
||||
case '4':
|
||||
nameserv_family = AF_INET;
|
||||
@ -263,7 +297,7 @@ main(int argc, char **argv)
|
||||
if (client_set_qtype(optarg))
|
||||
errx(5, "Invalid query type '%s'", optarg);
|
||||
break;
|
||||
case 'O': /* not -D, is Debug in server */
|
||||
case 'O':
|
||||
client_set_downenc(optarg);
|
||||
break;
|
||||
case 'L':
|
||||
@ -272,13 +306,31 @@ main(int argc, char **argv)
|
||||
lazymode = 1;
|
||||
if (lazymode < 0)
|
||||
lazymode = 0;
|
||||
if (!lazymode)
|
||||
selecttimeout = 1;
|
||||
if (!lazymode && max_interval_sec > 1)
|
||||
max_interval_sec = 1;
|
||||
break;
|
||||
case 'I':
|
||||
selecttimeout = atoi(optarg);
|
||||
if (selecttimeout < 1)
|
||||
selecttimeout = 1;
|
||||
max_interval_sec = strtod(optarg, NULL);
|
||||
if (max_interval_sec < 1)
|
||||
max_interval_sec = 1;
|
||||
break;
|
||||
case 'i':
|
||||
server_timeout_sec = strtod(optarg, NULL);
|
||||
if (server_timeout_sec < 0.4)
|
||||
server_timeout_sec = 0.4;
|
||||
autodetect_server_timeout = 0;
|
||||
break;
|
||||
case 'w':
|
||||
down_windowsize = atoi(optarg);
|
||||
break;
|
||||
case 'W':
|
||||
up_windowsize = atoi(optarg);
|
||||
break;
|
||||
case 'c':
|
||||
up_compression = atoi(optarg) & 1;
|
||||
break;
|
||||
case 'C':
|
||||
down_compression = atoi(optarg) & 1;
|
||||
break;
|
||||
default:
|
||||
usage();
|
||||
@ -349,10 +401,17 @@ main(int argc, char **argv)
|
||||
/* NOTREACHED */
|
||||
}
|
||||
|
||||
client_set_selecttimeout(selecttimeout);
|
||||
if (up_windowsize < 1 || down_windowsize < 1) {
|
||||
warnx("Windowsize (-w or -W) must be greater than 0!");
|
||||
usage();
|
||||
}
|
||||
|
||||
client_set_compression(up_compression, down_compression);
|
||||
client_set_dnstimeout(max_interval_sec, server_timeout_sec, autodetect_server_timeout);
|
||||
client_set_lazymode(lazymode);
|
||||
client_set_topdomain(topdomain);
|
||||
client_set_hostname_maxlen(hostname_maxlen);
|
||||
client_set_windowsize(up_windowsize, down_windowsize);
|
||||
|
||||
if (username != NULL) {
|
||||
#ifndef WINDOWS32
|
||||
@ -391,7 +450,8 @@ main(int argc, char **argv)
|
||||
|
||||
fprintf(stderr, "Sending DNS queries for %s to ", topdomain);
|
||||
for (int a = 0; a < nameserv_addrs_len; a++)
|
||||
fprintf(stderr, "%s%s", format_addr(&nameserv_addrs[a], nameservaddr_len), (a != nameserv_addrs_len-1) ? ", " : "");
|
||||
fprintf(stderr, "%s%s", format_addr(&nameserv_addrs[a], nameservaddr_len),
|
||||
(a != nameserv_addrs_len-1) ? ", " : "");
|
||||
fprintf(stderr, "\n");
|
||||
|
||||
if (client_handshake(dns_fd, raw_mode, autodetect_frag_size, max_downstream_frag_size)) {
|
||||
|
||||
Loading…
Reference in New Issue
Block a user